Improvement in shafts and journals



A. E. SMITH. Shaft and Journal.

No. 207,3I3, Patented Aug. 20, |878.

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ALFRED E. SMITH, or BRONXVILLE, NEW Yoitie.

arrimage@ meier ilo@- u r ,leiieiem tie 'tu ,intern mit asco u leonie-Jedit qm-e en: dona IMPROVEMENT IN Vsl-uiFTs'AND JouRNALsiiaaati qqs aeheine-z i edi has mi Specification forming part of Letters Patent No.207,313, dated August '20, 1678; amdiiepttbiili'l'edfl February 21,187B.

To all whom it may concern:

Be it known that I, ALFRED E. SMITH, of Bronxville, in the county ofWestchester and State of New York, have invented certain new and usefulImprovements in Shafts and Journals, of which the following is aspecification:

This invention relates to certain improvements in journal-bearings, itsobject being to give to the same a certain degree of elasticity in orderto prevent the noise and disagreeable jarring attendant upon the rigidbearings coinmonly used, and at the same time to provide for theefficient lubrication of such bearings,

as more fully hereinafter set forth.

To this end my invention consists in constructing either thebearing-surface of the axle, shaft. or journal, or the axle, shaft, 0rjournal, or both, of elastic material, such as india-rubber,gutta-percha, or the like, and employing in conjunction with the saine adry lubricant, consisting of pnlverized plumbago, which may be appliedbetween the bearingsurfaces or incorporated with an interposed lining offibrous material, or incorporated direetl y with the rubber or otherelastic material, as may be found desirable in practice.

In the drawings, Figure 1 represents a lon gitudinal section of ajournal and its bearing, showing my improvement; and Fig. 2, atransverse section of the bearin g. Fig. 3 represents a longitudinalsection of a journaland, its bearing, showing a modification of myimprovement; and Fig. 4, cross-sections of the bearing on the lines a1..r and y y of Fig. 3. Fig. 5 represents a longitudinal section of ajournal and its bearing, showing the elastic lining ap plied to thejournal as well as the bearing; Fig. 6, a view partly in elevation andpartly in section, of a modification of the elastic lining for thebearing; Fig. 7, a view, partly in scetion and partly in elevation,showin g the elastie lining provided with pockets or apertures forholding the dry lubricant; Fig. S, a view, partly in section and partlyin elevation, of the rigid lining employed in connection with theelastic lining of t-he bearing; and Fi 9, a view showing my invention asapplied to the journal-bemin gs of rai lroad-ears, shaftin g, and thelike;

In carrying out my invention, I line the bearingsurfaces of either thebox or the axle een; eilt ai ,ieri .Tedda'r bastano aq ei guidant! nietor shaft, or both, with iiidihrgbb,'lg@tta percha, or other elasticmateittlgnsglit as a bushing, or otherwise Supplying 'ilethe box, or, incase of an ordinahysfeifie @tithe hub, and applying it as agsleetieit'ehxle or shaft, if said elastic bea'riilgastlrbeemployed thereon. 1iaiia'le est ,tiene When the rubber bushiun's, eyitlll asia lining forthe hub or box, Brlyf ey in connection therewith alitringbf tml 'abric,such as linen, to holdotheidnylabi'imt -employed with theimproretlelimg.

In some instances it may be desirable to employ a rigid lining for theelastic bushing, which may consist of hard rubber, guttapercha, ormetal; butI prefer to employ a compound consisting of vulcanized rubber,having incorporated therewith pulverized pl unibago, which can bereadily manufactured by any person skilled in the art of manufacturingrubber; aud such rigid lining may be provided with apertures at suitablepoints for the purpose of retaining the lubricant.

In connection with my improved journalbearing, I employ a dry lubricant,consisting of pulverized plulnbago or graphite, which may be applieddirect-ly to the bearing-sur faces, but is preferably applied bythoroughly incorporating it with a textile lining secured in thebushing, as above described.`

In Figs. 1 and 2 of the drawings my im* provenlent is represented asapplied to the axlebearings of a carriage or other ordinary vehicle, inwhich the letter A represents the hub-of a vehicle, and B a bushing orlining of elastic material, preferably of india-rubber or gutta-percha.

The letter C represents a lining of textile fabric on the interior ofthe bushing or elastic lining, wit-h which is thoroughly incorporated asuticient quantity of pulverized plunibago to serve as a lubricant forthe bearing.

The letter l) represents the axle, which may be of the ordinaryconstruction, but is preferably forlncd with a conical bearing, as shownat d, a similar conical bearing being formed on the nut c, whichcontines the hub to the axle. The yielding or elastic nature of thebushing enables it to conform to the shape of the conical bearingswit-hout being specially formed therefor.

srs? AVAILALE COPY In Figs. 3 and 4 iis representedia'hublprovided withan elastic bushing,jB,'f-'preiera`bly of soft vulcanized rubber,withallining of rigid material, C, which may'consist-'ofhard rubber, jmetal, or other suitable material, v.in which i case the ends areformedito correspond"with the conical bearings on-tlre axlevand nut, iffi t '.rbearingswillJbe particul'yapphcable to vel:liiclesofall?:classesgvasiittwillsbviate, to a -igreat extent, lthe f jarringlattenuanti@1 ipon the .rigid bearings in use,t"causin*g'the.vehicle toride much more easily and pleasantly.

such are employed. 4

In Figs.4 and 5 the elasticaliningis'repre-f sented as applied to boththecinterior of the:

hub and the bearing-surface of the"axle,.the` letter E representing asleeve of elastic mate-py rial, in the prescntinstance -consistingofvulcanlzed rubber. In this modification the'ielas` tic bushing isprovided with a secondary bushingor lining of rigid materinl,fsnchasanetal or hard rubber, as lepresentedffaat @andina similar rigidbushing is shown gin the ineditication represented in Figs. 3 andy 4.

In Fig. 6 the rigid lining G isgproy-'ded 4with a conical seat for theconical portionff fthe shatt, the elastic lining B being provided with ashoulder, b, at one cnd to limit` there-stent to which it is inserted inthe hubxor bearing.

In Fig. 7 the elastic lining B isrepresentcd having a series of pocketsor apertures, b', for the reception of the dry lubricant.

In Eig?. 9 :the elastica..liniggzsrrepresented as appliedtdatheiodinarygsplitigemmabbox G .of fa railroad-carporthe:hangersofshafting, for the like.

It is evidentl that-'sasl thuscconstructed, the

with comparativelylittle;noiseglaictzthat such What I claim, andl desiretoasecure by Let- V:tei-sx Patent,1is`

The combinationiof a shaftfvelurnal, its bearing; andnianlela'sticbearingmnface with ;a dry lnbricatingpoirdersuchasjiilninbago or:'graphiteyincorporatediwitlnomapplied'. to the elasticbearinggsrface;isubstantillyms and for the pnrpos'ezdescribed.

In .-testmonyfthatl Iclaimthelsforegon g I have 'herentofsiinyhand inftheipresence ot' the snbs'chingvritncsses.

, 'LEREDiEtFSMITH.

Witnesses:

HUGHQPORTEB, 11.10. Scmvnn.

